Test reviews

  • First Light: PlaneWave DeltaRho 350 Astrograph

    I had the chance to test the DeltaRho 350 f/3 Astrograph (DR350) with the serial number 0003 – all in all this solution is absolutely remote capable! You can read my first impressions and experiences here: Setup and installation The unit is very well made and in combination with PlaneWave's focuser and de-rotator, it is quite a massive unit and surprisingly heavy. The center of gravity is at the back of the telescope. The PWI4 (beta) software that operates the DR350 telescope installs quickly and works immediately with Maxim DL. If you have problems, take a look at the USB settings in PWI4, which is used to operate the fans, the heating of the secondary and primary mirrors, the focuser, and the rotator. The DR350...
  • The new "f/2" narrowband filters from Baader in use.

    A field report after photographic acquisition of five different celestial objects. From Dr. Claus Possberg, Freyung Observatory (www.possi.space) – October 2022 The use of ultra-highspeed systems such as Celestron RASA, Hyperstar, or special astrographs has revolutionized the acquisition of faint nebular objects in recent years, but requires a special filtering technique that I would like to discuss here. An emission line, such as H-alpha at 656.28 nanometers, optimally experiences very little attenuation when passing through a line filter in the central beam. The world's best filters achieve a good 90% transmission here. However, if the beam passes through the periphery of the telescope system, the emission line shifts slightly toward shorter wavelength light (blueshift). If the filters have a very narrow-band transmission characteristic, the wavelength...
  • The Baader FCCT with the QHY 268M on the RASA 8 - Step by Step to Perfect Collimation

    If a sensor diagonal of 22mm is ideal for a sharp image with the RASA 8, but if you have got "only" a camera with a diagonal of 28.5mm is available - is a good image possible at all? I tried this out and will describe here step by step my way to the finished image with the Baader Baader FCCT (Filter Changer Camera Tilter) for RASA 8" and QHY cameras (various versions available) an the QHY 268M ( QHY268 M/C BSI Cooled Medium Size APS-C Cameras (various versions available) (various versions available) ) on the RASA 8, especially the adjustment of the overall system. I suggest that you read all this before you try it out yourself! For safety's sake, check every step –...
  • Amateur Astronomers take a look through the Cloud Cover of Venus with our SLOAN Filters

    Amateur astronomers successfully explore Venus with Baader SLOAN Filter Even today, amateur astronomers can still contribute to scientific research. For example, our new photometric filters now open another window into the depths of the atmosphere of the planet Venus. Venus amazes researchers. It is as big as the Earth, but extremely different from it. Venus is a hellish world with temperatures of up to 450 degrees at the surface. The reason for this is an enormously dense atmosphere, which generates a pressure that only exists at an ocean depth of 900m on Earth. This atmosphere consists of 90% carbon dioxide, a dense layer of sulphur dioxide clouds makes it opaque to us. There are only a few narrowly limited wavelengths in which a space probe...
  • Test review: BAADER ULTRA NARROWBAND FILTER, Francesco di Biase

      Mr. Francesco di Biase had the opportunity to test the new Baader Ultra Narrowband Filters 36mm in unmounted version in his small observatory with a sliding roof under a suburban sky (19.40 SQM). Among other things, the observatory is equipped with a 10micron GM2000 HPS II mount and a 12" GSO RC telescope, which he uses at full focal length with a KAI 4022 CCD sensor. We are very pleased about the positive feedback on the new CMOS-optimized Baader 3.5 / 4nm Ultra-Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II) (various versions available) and his field report. Original: My general opinion on performance, supported by the tests carried out and my experience with other high-end products, is fully positive. I believe that they can...
  • A report on visual use of the Baader H-Beta 5.5nm CMOS filter

    In the summer of 2021 I approached Baader Planetarium to ask whether I could test the new Baader O-III Narrowband-Filters (6.5nm) – CMOS-optimized (various versions available) to explore its visual capabilities for binocular observation of galactic nebulae. To my delight and surprise, Messrs. Baader offered not only to provide on loan the 6.5nm OIII Filter which I had requested, but also a prototype of the Baader H-Beta Narrowband-Filter (5.5nm) – CMOS-optimized (various versions available) now available on the market – and to do so in pairs in both 1.25” and 2” filter cells! I must admit that, initially, I had no particular expectations of the 5.5nm filter. For I, too, had allowed the prevailing myths about H-Beta obervation to cloud my view. These myths include:...
  • A compact and lightweight scope for guiding: QHYCCD's miniGuideScope

    A lot of people who undertake astrophotography, whether they are beginners or seasoned amateurs, opt for high quality small aperture, short-medium focal length telescopes such as BAADER APO 95/580 CaF2 Travel Companion (#2300095 , € 4494.98) or the 8" Celestron Rowe-Ackermann Schmidt Astrograph. These telescopes will give a relatively wide field of view allowing images to be taken of spectacular large celestial objects such as the North American Nebula, Andromeda galaxy, Orion nebula, Pleiades open star cluster and many many more. Guiding is essential for taking long exposure images of such celestial objects. Long gone are the days when your guidescope was a telescope that would be similar in focal length as your imaging scope and you would guide by looking at a star through...
  • Baader SunDancer II H-Alpha Filter – Test Review

    I was lucky enough to be able to "play" with one of the first SunDancer II H-alpha filters and see what it is capable of. Even though I am not one of the most experienced H-alpha observers, I have been able to observe the sun with the two H-alpha telescopes of the Observatory in Heilbronn/Neckar again and again for more than 20 years. These are a 20/20 H-alpha filter by Wolfgang Lille with 0.8Å on the 150/2250 refractor (which complements a classical prominence filter), and a Lunt LS-60 telescope. I freely admit that I find the concept of the Lunt convincing, especially for public observatories: a complete telescope with which nothing can go wrong. It's foolproof, which is especially important in an club where many...
  • Celestron CGX mount in combination with StarAid Revolution as guiding cam

    The CGX: A Versatile Mount For Everyone! Recently I was able to work with the Celestron CGX, the Baader Apo 95/560 Travel Companion, the Nikon D810A and the StarAid Revolution as guiding system for the first time. Once again the results proved how much you can get out of a good system if you take some time to tweak the settings a little bit instead of simply working with the factory settings of the software without taking a closer look at them. To get straight to the point: I'm really excited about what the CGX delivered last night! For polar alignment, I used the star Regulus and the integrated AllStar Polar Alignment (ASPA) system of the CGX. My alignment routine only consisted of a 2-star alignment, with...
  • The disc of Mercury near the upper conjunction, captured with the Baader APO Travel-Companion 95/580

    Our customer Jörg Schoppmeyer sent us this unusual picture: a circular Mercury, shortly after the upper conjunction and only 1.8° away from the Sun!     Mercury is traditionally a difficult object to observe. The reason: The small planet is always close to the Sun and can be seen with the naked eye only shortly after sunset or before sunrise when it is at maximum distance from the Sun. Legend has it that even the great astronomer Johannes Kepler never saw Mercury with his own eye - but Kepler did not have a modern telescope with accessories from Baader Planetarium... On August 18th, 2020, Jörg Schoppmeyer pointed his BAADER APO 95/580 CaF2 Travel Companion (#2300095 , € 4494.98) at Mercury. Since the small planet was...

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